工业水处理 ›› 2022, Vol. 42 ›› Issue (11): 107-112. doi: 10.19965/j.cnki.iwt.2022-0030

• 试验研究 • 上一篇    下一篇

高级氧化-水解酸化-A/O组合工艺处理印染废水

梁培瑜1(), 沈紫飞2, 吴永明1, 吴施婧1(), 邓觅1, 朱林1, 邓利智2   

  1. 1. 江西省科学院微生物研究所, 江西 南昌 330096
    2. 南昌大学资源环境与化工学院, 鄱阳湖环境与资源利用教育部重点实验室, 江西 南昌 330031
  • 收稿日期:2022-08-15 出版日期:2022-11-20 发布日期:2022-11-23
  • 作者简介:

    梁培瑜(1990- ),硕士。E-mail:

    吴施婧,助研。E-mail:

  • 基金资助:
    江西省科学院省级科技计划项目包干制试点示范项目(2021YSBG22024); 江西省科学院省级财政科研项目经费包干制试点示范项目(2022YSBG22012)

Treatment of printing and dyeing wastewater using advanced oxidation-hydrolysis acidification-A/O combined process

Peiyu LIANG1(), Zifei SHEN2, Yongming WU1, Shijing WU1(), Mi DENG1, lin ZHU1, Lizhi DENG2   

  1. 1. Institute of Microbiology,Jiangxi Academy of Sciences,Nanchang 330096,China
    2. Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,School of Resources Environment & Chemical Engineering,Nanchang University,Nanchang 330031,China
  • Received:2022-08-15 Online:2022-11-20 Published:2022-11-23

摘要:

日益严格的印染废水排放标准对污水处理工艺提出更高要求,针对传统工艺的改进提升成为当前重要研究内容。以处理效果更佳的两级“Fe/C微电解联合Fenton氧化”-混凝沉淀作为改进的高级氧化工艺,在此基础上提出了改进的高级氧化-水解酸化-A/O组合工艺,研究了该组合工艺对南昌市某工业园印染废水处理厂的高COD(>9 000 mg/L)、高氮(>700 mg/L)印染废水的处理效果。结果表明,改进的高级氧化工艺可有效去除废水中的难降解污染物,降低废水COD及TN,其中COD去除率由50.8%提高至72.5%;水解酸化阶段可对COD进行进一步去除,并使含氮有机物通过氨化作用转化为氨氮,提高废水可生化性;A/O处理工艺可有效去除大部分NH4 +-N和TN,其中缺氧反应阶段采用强化脱氮措施可有效强化A/O阶段对TN的去除。该组合工艺对印染废水COD、NH4 +-N、TN去除率分别为95.8%、33.8%、93.3%,出水COD、NH4 +-N、TN分别为413.5、34.7、48.6 mg/L,满足当地工业园区污水处理厂纳管标准。

关键词: Fe/C微电解, 水解酸化, A/O工艺, 印染废水

Abstract:

Increasingly stringent discharge requirements put forward for higher sewage treatment efficiency of printing and dyeing wastewater. The improvement and promotion of traditional process become an important research content. In this paper,two-stage “iron-carbon micro-electrolysis combined with Fenton oxidation”-coagulation sedimentation was proposed as improved advanced oxidation process. On this basis,the combined process of improved advanced oxidation-hydrolysis acidification-A/O was used for treatment of printing and dyeing wastewater(COD>9 000 mg/L,TN>700 mg/L) in an industrial park in Nanchang. The results showed that advanced oxidation unit had significant effect on the removal of refractory organic pollutants,COD and TN,and the COD removal rate was increased from 50.8% to 72.5%. The hydrolysis acidification unit realized further removal of COD,and improved the biodegradability by promoting the conversion of nitrogen-containing organic matter to ammonia nitrogen through ammoniation. The A/O unit could easily remove most of NH4 +-N and TN. In anoxic reaction stage, enhanced nitrogen removal measures could effectively increase the denitrification effect of A/O stage. The removal rates of COD,NH4 +-N and TN of the combined process were 95.8%,33.8% and 93.3% respectively,and the effluent COD,NH4 +-N and TN were 413.5,34.7,48.6 mg/L respectively,which met the discharge the specified standards for discharging in the pipe of local chemical industry park.

Key words: Fe/C micro-electrolysis, hydrolytic acidification, A/O process, printing and dyeing wastewater

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